I picked up the Druid as an alt to get ready for 8.2 seeing that some improvements were being done and that Guardian Druid may make a comeback. I have played the Guardian spec and have finally climbed to over 1000io and here is my experience and my concerns in the future.
I struggle hard as a Guardian Druid to maintain damage mitigation to any decent degree. Often using all my CD’s just to survive with a lot of kyting. like a rediculous amount of kyting waiting for my cd’s to be active again before i can engage again. When I play as Resto Druid and have a Guardian Druid i am healing it is very clear how much they struggle. Both when i heal them and when I play as them. Other tanks are so much easier to run keys and raid with that the difference is a magnitude of difference between the tanks from Guardian Druids (DH i include here).
I have read the changes to Guardian Druid for 8.2 and after playing Guardian Druid I will be certain that the changes will not be enough. The extra Damage they receive and healing required even when Iron Bark is active is still not enough. More changes are needed to make Guardian Druid enjoyable to play. Increase Bear forms stamina and armor boost. Reduce the CD of Survival Instincts and increase the armor. Make Barkskin a 30 sec CD and increase its mitigation to 30%. I have used the talents to reduce the VD of the abilities and its still not enough. I think a mixture of the above combinations are needed, not all but additional changes are desperately needed in addition to the changes that are already on the horizon for the Guardian Druid.
Guardian Druid is extremely frustrating to play. Once you get into progression content the struggle is very apparent. At this point the Resto Druid is by far more fun to play because of all the frustrations from Guardian Druid. I wanted to play and I wanted to tank as Guardian, but after playing it and even in lower 10-12 keys and in raids its more frustrating than it is fun and ill be playing only as Resto Druid with this class. I am going to level my Paladin just so I can tank, because I want to do more tanking content but the Druid even with the foreseeable changes is going to make it a dead spec and this alt of mine will only be a healer. I want to play as Druid, but it needs more help so its not frustrating to play as or to play with.